i hate when this happens

somtimes when i go to a other room the mices dies a i hate so BADLY D:<

be more specific

i dont know its a bug?

If you can't describe it, nobody can help you.

it's spawn death if i am correct...

What they're saying is sometimes in the middle of gameplay, a mouse dies without falling or being killed by an object, lava ground or anything else. I have experienced this.
And no, not spawn death.